Yeah, just what Benjammin said. With such basic tools as knives there is a simple rule to follow - if the design is too exotic or unusual it most likely won't work. People have been using knives since the dawn of time and have figured out long ago what works and what doesn't. Look at Bowies or Scandinavian knives - their shape hasn't really changed a bit in the past 1000 years. Which speaks volumes.

For hard use I would always pick a more or less traditional knife. Modern materials are great and all the extra stuff such as Kydex sheaths, pocket clips, the Wave hook etc. may be great add-ons but the blade itself shouldn't look like it came out of a Star Wars movie IMHO.